Integrated Relay Architecture for IEEE m Systems Document Number: S802.16m-07_299 Date Submitted: November 12, 2007 Source: Sassan Ahmadi Jerry Sydir Hujun Yin Venue: Atlanta, GA Base Contribution: Call for Contributions on IEEE m System Description Document m-07_040 Purpose: For discussion and approval by IEEE Working Group (Consideration of integrated relay for IEEE m systems) Notice: This document does not represent the agreed views of the IEEE Working Group or any of its subgroups. It represents only the views of the participants listed in the “Source(s)” field above. It is offered as a basis for discussion. It is not binding on the contributor(s), who reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE Patent Policy: The contributor is familiar with the IEEE-SA Patent Policy and Procedures: and. Further information is located at and. S802.16m-07_299
2 Outline Logical Nodes and Interfaces Multi-hop Network Topology Frequency Usage and Duplexing With Relay Relay Functional Architecture Classification of Data Plane Functions IEEE m Air-Interface Protocol Stack IEEE m Data Plane Protocol Stack by Station Type IEEE m Control Plane Protocol Stack by Station Type
3 Logical Nodes and Interfaces e MS m MS m RS m BS m link legacy e link Scope of IEEE m legacy e link
4 Multi-hop Relay Network Topology R8 R1 BSMS BSRS R1’ Access Service Network Gateway R6 Access Service Network Layer 1 and Layer 2 protocols to be specified by m standard MS R1’’ R1’’’
5 Frequency Usage and Duplexing With Relay Support for shared channel (in-band) and dedicated channel (out-of- band relay) –Shared channel model – BS and RSs share a frequency channel and coordinate the allocation of radio resources –Dedicated channel model – BS and RSs are assigned independent instances of frequency channels and do not coordinate the allocation of radio resources on the channels Duplexing schemes –Support both TDD and FDD deployments –Assume that entire network is either TDD or FDD –In FDD, all DL transmissions assigned to the DL band and all UL transmissions assigned to the UL band.
6 Relay Functional Architecture Integrated relay architecture –Extend j architecture by making MSs aware of the presence of RSs and the multi-hop nature of the path between them and the BS. –Some examples of how this is useful are Allows better network entry decisions Support for advanced relay techniques Avoid the overhead of the split relay/access link architecture of IEEE j Support single relay mode based on one of j modes
7 Data Plane Functions Classified as End-to-End and Hop-by- Hop Hop-by-hop Functions –Performed to transmit/receive data over a single hop in a multi-hop relay network. –Performed independently at each hop (coordination across hops is not required) –Performed in the same manner at each hop in the network –Some examples of such functions are link adaptation and scheduling. End-to-end Functions –Performed to transmit data across a multi-hop path. –Performed in a coordinated manner from source to destination –Can be performed differently at different stations along the path. –Some examples of such functions are packet forwarding, which is performed at all of the stations along a path, but is different at the source, destination, and intermediate nodes and ARQ, which is performed only at the source and destination.
8 IEEE m Air-Interface Protocol Stack Example Classification of Layer 2 Functions Across Data and Control Planes
9 IEEE m Data Plane Protocol Stack by Station Type MS PHY HbH MAC Functions E2E MAC Functions CS RS PHY HbH MAC Functions E2E MAC Functions BS PHY HbH MAC Functions E2E MAC Functions CS IEEE m Air-Interface Security Security* * Security functions may be limited in certain nodes of the network that are outside of direct control of the operator (also known as security zone) MAC CPS
10 IEEE m Control Plane Protocol Stack by Station Type MS PHY HbH MAC Functions E2E MAC Functions Resource Control & Management Functions RS PHY HbH MAC Functions E2E MAC Functions Resource Control & Management Functions BS PHY HbH MAC Functions E2E MAC Functions Resource Control & Management Functions IEEE m Air-Interface Security Security* Certain management messages may be ciphered MAC CPS